Development of chiral N,N-ditopic metalloligands based on a Cinchona alkaloids' backbone for constructing homochiral coordination polymers.
نویسندگان
چکیده
The bimetallic chiral bipyridyl-type metalloligands based on aluminium derivatives of cinchonine, [R(2)Al(μ-CN)](2) (R = Me or Et), in combination with the corresponding ZnR(2) compound as nodes were used for the generation of novel homochiral heterometallic coordination polymers of either zig-zag or helical topology, depending on the character of the R substituent.
منابع مشابه
Organocatalytic enantioselective α-amination of 5-substituted rhodanines: an efficient approach to chiral N,S-acetals.
We report a highly efficient approach to constructing chiral N,S-acetals using 5-substituted rhodanines as sulfur-bound pronucleophiles catalyzed by natural cinchona alkaloids quinine or quinidine. This α-amination reaction has a broad substrate scope, and the products featuring both rhodanine and N,S-acetal structural motifs were obtained in high yields and excellent enantioselectivities.
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عنوان ژورنال:
- Chemical communications
دوره 47 3 شماره
صفحات -
تاریخ انتشار 2011